| Subject | English | Estonian |
| math. | acceptance boundary | vastuvõtujoon |
| math. | acceptance boundary | vastuvõtupiir |
| environ. | administrative boundary A limit or border of a geographic area under the jurisdiction of some governmental or managerial entity | halduspiir |
| gen. | administrative boundary line | halduspiir |
| gen. | administrative boundary line | administratiivpiir |
| comp., MS | autonomous system boundary router | autonoomsüsteemi piirimarsruuter (A router that exchanges routing information with routers that belong to other autonomous systems. The ASBR then advertises external routes throughout the autonomous system. ASBRs can be internal or area border routers, and they might or might not be connected to the backbone) |
| environ. | boundary crossing Crossing of a state border | piiriületus |
| environ. | boundary crossing Crossing of a state border | piiri ületamine |
| comp., MS | boundary delimiter | piirieraldaja (One or more characters that identify the start or end of a boundary) |
| comp., MS | boundary feedback | piiri tagasiside (A visual indication to the user that the end of the pan-able area is reached. This feedback is provided when sliding the parent window in the direction of pan and seeing it snap back to the initial position once the finger is released. This feedback is also provided when the page is moving with some momentum, and reaches the end of the scrollable region) |
| environ. | boundary layer The layer of fluid adjacent to a physical boundary in which the fluid motion is significantly affected by the boundary and has a mean velocity less than the free stream value | piirkiht |
| fin. | boundary of a reinsurance contract | edasikindlustuslepingu piir |
| fin. | boundary of an insurance contract | kindlustuslepingu piir |
| stat. | class boundary | klassipiir |
| stat. | class boundary | klassi piir |
| environ. | national boundary The line demarcating recognized limits of established political units | riigipiir |
| environ. | sub-national boundary The line demarcating a territory located within the limits of a State | riigisisene piirjoon |
| comp., MS | system boundary | süsteemi piir (In a use case diagram, a boundary surrounding the use cases that indicates the system. You can resize the system boundary by dragging a selection handle on the System Boundary shape) |
| environ., tech. | system boundary | süsteemipiirid |